Slub catcher



- June-1l, 1929. l A.'A. MAINO ETAL 1,716,452

SLUB GATCHER Filed June 19, 1928 574:53, mar-v. vs'

sri-ras i maar .ALBERT A. MAINC AND ALBERT NORLANDER, OF NEW'IBEIDVIFOBLI), MASSACHUSETTS.

SLUB CATCHER.

Application filed June 19, 1928.

Our invention relates to thread guides for spoolers and particularly to an adjustable catching device for the arresting of those bunches or imperfections in the thread usually termed slubs. Suchdefects in the yarn give ldifficulties in later textile processes and cause delays in operation and waste of time of expensive hands, so that the detection and elimination of these slubs is of very considerable importance.

Devices of this sort have been proposed but they have for the most part had a tendency to scrape the yarn or destroy its finish. Our invention allows an absolute free running of the yarn as'long as it is free from defects, but instantly and firmly catches the yarn where any bunch or imperfection exists.

As illustrative of our invention we show in the accompanying drawings an embodiment which is simple and inexpensive, but e.\:treinely efficient in operation. The guide proper' is of generally standard type and our invention is capable of embodiment in almost any type of guide either as a part of the y guide itself or as an attachment thereto.

Throughout the specification and drawings like reference characters are used to indicate corresponding parts, and in -the drawings:

Fig. l is an elevation of such a device in accordance with our invention. Fig. 2 a View on the opposite Fig. 3 an end View. Y Fig. t an enlarged section, and Fig. 5 a detail showing the edge of the side.

' slub catching blade.

lille have indicated at 1.a rail clamp on which is formed a thread bar 2 havinga broad milled thread ruiming surfacev 21, constituting a run-way for the thread` and over which the thread .may run freely under normal circumstances. Pivoted above the clamp l as at 3 is a rocker arm t carrying a pin 5 disposed parallel to the surface 21. Pivoted on the pin 'is a catcher blade .6 which is V of slightly greater breadth than the distance tion of slight elevation the edge 61 is `parallel to the surface 21.

Serial No. 286,563.

The blade 6 is provided with a lateral counterweight 7 which normally tends to raise the edge 61 of the blade 6 from the surface 21. Y This tendency is controlled by a set screw 8 which contacts with a shoulder 9 so that the device can be accurately set for any size of yarn to be spooled.V The thread T running in the direction indicated'bythe arrow normally passes under the edge 61 as it traverses the surface 21, but should any bunch or knot or imperfection in the thread reach the edge 61, it catches suiiiciently to pull the edge 61 down on the surface 21 thereby arresting the imperfection immediately. rllhe operation is very simple but very positive and the device responds instantly to any slub above vthe given size for which the catcher is set. Our device maybe designed for any desired type of mounting and its proportions and balance of counterweight produced to meet any desired conditions or type of yarn. With suitable adjustment the catcher has no effect on the normal run of the yarn whatsoever as it passes freely over the smooth broad surface 21`and under the edge 61 of the blade. When actuated, however, as above described, the edge 61 is by the downward swing of the blade brought into direct contactwith the surfacei21'so as to tightly asthe tensionis increased.

iirmly pinch the Ayarn and to do so the more Y Various modifications as above suggested "may be made, all without departing Vfrom the lclamp presenting a horizontally extending thread run way, a blade pivot extending from said clamp over Ysaid runway and spaced therefrom, a blade hung from said pivot with its lower edge disposed substantially to Contact said way by movement in the direction of run of the thread, and a counterweight laterally offset from the upper end of said blade and disposed substantially in the plane of the pivot.

2. ln a device of the vclass described, a rail clamp presenting Aa horizontally extending thread run way, a blade pivot extending from i said clamp suhsta-ntially directly over said of said blade and disposed eoextensive with run Way and .spaced therefrom, a blade hung and substantially in the plane of the pvot. from said pivot With its lower edge disposed In testimony whereof We affix our signa- 10 substantially coeXtensiVe With said Way Vfor tures.

Contact therewith by movement in the direction of run of the thread, and a Counter- ALBERT A. MAINO.

Weight laterally offset from the upper end ALBERT NORLANDER; 

